:root{
  --night:#0b1324;
  --night2:#0f1a31;
  --panel:#13213d;
  --edge:#22345a;
  --ink:#eef2fa;
  --mute:#9aa9c6;
  --dim:#64759a;
  --sign:#ffcd00;
  --red:#e8423f;
  --blue:#2fa8e0;
  --green:#29b36b;
  --purple:#b06ad9;
  --orange:#f08a24;
  --sans:"Overpass",system-ui,sans-serif;
  --mono:"Overpass Mono",ui-monospace,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--night);color:var(--ink);font:17px/1.6 var(--sans);overflow-x:hidden}
a{color:var(--sign)}
code{font-family:var(--mono);font-size:.85em;background:rgba(255,205,0,.1);color:var(--sign);padding:.1em .35em;border-radius:4px}
.skip{position:absolute;left:-999px;top:8px;background:var(--sign);color:#000;padding:8px 12px;z-index:99;border-radius:6px}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--sign);outline-offset:3px}
.ln{display:inline-block;width:18px;height:6px;border-radius:3px;background:var(--c);vertical-align:middle;margin-right:8px}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(11,19,36,.92);backdrop-filter:blur(10px);border-bottom:4px solid var(--sign)}
.nav-in{max-width:1240px;margin:auto;display:flex;align-items:center;gap:20px;padding:12px 20px}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none}
.roundel{width:34px;height:34px;border-radius:50%;border:7px solid var(--red);display:grid;place-items:center;position:relative;background:var(--night)}
.roundel i{position:absolute;left:-10px;right:-10px;height:9px;background:var(--blue);border-radius:2px}
.brand-t{font:800 22px/1 var(--sans);letter-spacing:-.01em}
.brand-t b{color:var(--sign)}
.nav nav{margin-left:auto;display:flex;gap:2px}
.nav nav a{color:var(--mute);text-decoration:none;font:700 14px var(--sans);padding:8px 12px;border-radius:8px;display:flex;align-items:center}
.nav nav a:hover{color:var(--ink);background:var(--panel)}
.nav nav .ln{width:12px;height:12px;border-radius:50%;margin-right:7px}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;font:800 16px var(--sans);padding:13px 22px;border-radius:999px;text-decoration:none;cursor:pointer;border:3px solid transparent;transition:transform .15s,background .15s}
.btn:hover{transform:translateY(-2px)}
.btn-sign{background:var(--sign);color:#0b1324}
.btn-sign:hover{background:#ffe066}
.btn-line{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-small{padding:8px 14px;font-size:14px}

/* hero */
.hero{position:relative;padding:64px 20px 0;overflow:hidden}
.hero-in{max-width:1240px;margin:auto;display:grid;grid-template-columns:1.25fr .9fr;gap:48px;align-items:center;position:relative;z-index:2}
.platform{font:700 13px var(--mono);letter-spacing:.2em;color:var(--sign);margin:0;display:inline-block;padding:6px 12px;border:2px solid var(--sign);border-radius:6px}
.hero h1{font:900 clamp(40px,6.2vw,80px)/.98 var(--sans);letter-spacing:-.03em;margin:.35em 0 .3em}
.hero h1 span{color:var(--sign)}
.lede{color:var(--mute);font-size:19px;max-width:600px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.board{background:#05080f;border-radius:14px;border:3px solid #1d2a47;padding:18px 18px 14px;box-shadow:0 30px 60px -20px #000,inset 0 2px 0 #24365e}
.board-head{display:flex;justify-content:space-between;font:700 12px var(--mono);letter-spacing:.2em;color:var(--sign);border-bottom:2px dashed #1d2a47;padding-bottom:10px;margin-bottom:6px}
.board-row{display:grid;grid-template-columns:110px 1fr;gap:12px;align-items:center;padding:9px 0;border-bottom:1px solid #121b30}
.b-k{font:700 11px var(--mono);letter-spacing:.18em;color:var(--dim)}
.b-v{font:700 18px var(--mono);color:var(--sign);text-shadow:0 0 12px rgba(255,205,0,.35);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-variant-numeric:tabular-nums}
.flap{letter-spacing:.06em}
.flap.flip{animation:flip .5s steps(4)}
@keyframes flip{0%{opacity:.2;transform:rotateX(80deg)}100%{opacity:1;transform:none}}
.board-note{font:12px var(--mono);color:var(--dim);margin:10px 0 0}
.hero-map{display:block;width:100%;height:220px;margin-top:40px;opacity:.95}
.train{stroke-dasharray:22 400;animation:run 9s linear infinite}
.t2{animation-duration:12s;animation-delay:-4s}
.t3{animation-duration:10.5s;animation-delay:-7s}
@keyframes run{from{stroke-dashoffset:422}to{stroke-dashoffset:-1400}}

/* sections */
section{padding:90px 20px}
.sec-head{max-width:1240px;margin:0 auto 32px}
.kicker{font:700 14px var(--mono);letter-spacing:.08em;color:var(--mute);margin:0;text-transform:uppercase;display:flex;align-items:center}
.sec-head h2{font:900 clamp(34px,5vw,60px)/1 var(--sans);letter-spacing:-.025em;margin:.25em 0 .3em}
.sec-head p{color:var(--mute);max-width:720px;margin:0}

/* planner */
.planner{background:linear-gradient(180deg,var(--night2),var(--night));border-top:1px solid var(--edge)}
.ticket{max-width:1240px;margin:auto;display:grid;grid-template-columns:1.2fr 1fr auto 1.2fr .7fr auto;gap:14px;align-items:start;background:var(--ink);color:var(--night);border-radius:18px;padding:20px;position:relative;box-shadow:0 30px 60px -30px #000}
.ticket::before,.ticket::after{content:"";position:absolute;top:50%;width:26px;height:26px;border-radius:50%;background:var(--night2);transform:translateY(-50%)}
.ticket::before{left:-13px}.ticket::after{right:-13px}
.t-field{display:flex;flex-direction:column;gap:5px;min-width:0}
.t-field label{font:800 12px var(--mono);letter-spacing:.16em;text-transform:uppercase;color:#4a5878}
.t-field input,.t-field select{font:800 22px var(--sans);border:3px solid var(--night);border-radius:10px;padding:9px 12px;background:#fff;color:var(--night);width:100%;min-width:0}
.t-field input:focus,.t-field select:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 4px rgba(47,168,224,.25)}
.hint{font:12px var(--mono);color:#5d6b8a;min-height:1.4em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hint.bad{color:var(--red);font-weight:700}
.swapdir{align-self:center;margin-top:12px;width:48px;height:48px;border-radius:50%;border:3px solid var(--night);background:var(--sign);font:900 22px var(--sans);cursor:pointer;color:var(--night);transition:transform .25s}
.swapdir:hover{transform:rotate(180deg)}
.go{align-self:center;margin-top:12px;background:var(--night);color:var(--sign);border-color:var(--night)}
.go:hover{background:#18284a}
.cmp{grid-column:1/-1;font:600 14px var(--sans);color:#3c4a69;display:flex;gap:8px;align-items:center;cursor:pointer}
.cmp input{width:18px;height:18px;accent-color:var(--night)}
.examples{max-width:1240px;margin:18px auto 0;display:flex;flex-wrap:wrap;gap:10px;align-items:center;font:700 13px var(--mono);color:var(--dim)}
.ex{font:700 14px var(--sans);background:var(--panel);border:2px solid var(--edge);color:var(--ink);border-radius:999px;padding:8px 14px 8px 10px;cursor:pointer;display:inline-flex;align-items:center;gap:8px;transition:border-color .15s,transform .15s}
.ex i{width:14px;height:14px;border-radius:50%;background:var(--c);border:3px solid var(--night);box-shadow:0 0 0 2px var(--c)}
.ex:hover{border-color:var(--sign);transform:translateY(-1px)}
.result{max-width:1240px;margin:30px auto 0}
.placeholder{border:3px dashed var(--edge);border-radius:18px;padding:40px 20px;text-align:center;color:var(--dim)}
.placeholder svg{width:min(400px,100%);height:auto}
.loading{border:2px solid var(--edge);border-radius:18px;padding:28px;display:flex;align-items:center;gap:16px;color:var(--mute);font:600 16px var(--sans)}
.loading .spin{width:26px;height:26px;border-radius:50%;border:5px solid var(--edge);border-top-color:var(--sign);animation:sp 1s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.err{border:3px solid var(--red);border-radius:18px;padding:22px;background:rgba(232,66,63,.08)}
.err b{display:block;font:900 22px var(--sans);color:#ff8a87;margin-bottom:4px}
.err p{margin:0 0 12px;color:var(--mute)}

.dep{display:grid;grid-template-columns:repeat(5,1fr);gap:0;background:#05080f;border:3px solid #1d2a47;border-radius:16px;overflow:hidden}
.dep>div{padding:14px 16px;border-right:1px solid #16213a;min-width:0}
.dep>div:last-child{border-right:0}
.dep small{display:block;font:700 11px var(--mono);letter-spacing:.16em;color:var(--dim);text-transform:uppercase}
.dep b{display:block;font:700 22px/1.25 var(--mono);color:var(--sign);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-variant-numeric:tabular-nums}
.dep span{font:12px var(--mono);color:var(--mute)}
.dep .good{color:#5fe39a}.dep .bad{color:#ff8a87}
.mapwrap{margin-top:18px;background:#f4f1e8;border-radius:18px;padding:16px 14px;position:relative;box-shadow:inset 0 0 0 1px #d8d2c2}
.mapwrap .cap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;font:700 12px var(--mono);letter-spacing:.1em;color:#5b6070;text-transform:uppercase;padding:0 6px 8px}
#routeMap{width:100%;height:auto;display:block}
#routeMap .lane{fill:none;stroke-linecap:round;stroke-linejoin:round}
#routeMap .pulse{fill:none;stroke:#fff;stroke-linecap:round;stroke-dasharray:4 70;animation:pulse 3.2s linear infinite;opacity:.9}
@keyframes pulse{from{stroke-dashoffset:74}to{stroke-dashoffset:-600}}
#routeMap .st{fill:#fff;stroke:#111;stroke-width:5}
#routeMap .st-name{font:900 22px var(--sans);fill:#111}
#routeMap .st-sub{font:700 13px var(--mono);fill:#5b6070}
#routeMap .badge rect{fill:#111}
#routeMap .badge text{font:700 13px var(--mono);fill:#fff}
#routeMap .vlab{font:800 13px var(--sans);fill:#111}
.legend{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:10px;margin-top:14px}
.leg{display:flex;gap:12px;align-items:center;background:var(--panel);border:2px solid var(--edge);border-radius:12px;padding:10px 12px;min-width:0}
.leg i{flex:none;width:30px;height:10px;border-radius:5px;background:var(--c)}
.leg div{min-width:0}
.leg b{display:block;font:800 15px var(--sans)}
.leg span{display:block;font:12px var(--mono);color:var(--mute);overflow-wrap:anywhere}
.leg a{color:var(--mute)}
.tt{width:100%;border-collapse:collapse;margin-top:18px;font:14px var(--mono);background:var(--panel);border-radius:14px;overflow:hidden}
.tt caption{text-align:left;font:900 22px var(--sans);padding:0 0 10px;color:var(--ink)}
.tt th{font:700 11px var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--dim);text-align:right;padding:10px 12px;background:#0f1a31}
.tt td{padding:10px 12px;border-top:1px solid var(--edge);text-align:right;white-space:nowrap}
.tt th:first-child,.tt td:first-child,.tt th:nth-child(2),.tt td:nth-child(2){text-align:left}
.tt .sw{display:inline-block;width:12px;height:12px;border-radius:50%;background:var(--c);margin-right:8px;vertical-align:-1px}
.ttwrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.compare{margin-top:18px;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.cmpcard{background:var(--panel);border:2px solid var(--edge);border-radius:16px;padding:18px}
.cmpcard h4{margin:0 0 4px;font:900 20px var(--sans)}
.cmpcard p{margin:0;color:var(--mute);font-size:15px}
.bar{height:16px;border-radius:8px;background:#0b1324;overflow:hidden;margin-top:10px;border:1px solid var(--edge)}
.bar i{display:block;height:100%;background:var(--sign)}
.bar.d i{background:var(--blue)}
.big{font:800 26px var(--mono);color:var(--sign)}
.sweep{margin-top:18px;background:var(--panel);border:2px solid var(--edge);border-radius:16px;padding:18px}
.sweep h4{margin:0;font:900 20px var(--sans)}
.sweep p{color:var(--mute);margin:4px 0 12px;font-size:15px}
.sweep-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:12px}
.sw-cell{background:#0b1324;border:2px solid var(--edge);border-radius:12px;padding:12px;min-width:0}
.sw-cell small{display:block;font:700 11px var(--mono);color:var(--dim);letter-spacing:.12em}
.sw-cell b{display:block;font:800 18px var(--mono);color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sw-cell .mini{display:flex;gap:3px;margin-top:8px;flex-wrap:wrap}
.sw-cell .mini i{width:10px;height:10px;border-radius:50%;background:var(--c)}
.sw-cell span{font:12px var(--mono);color:var(--mute);display:block}
.meta{font:12px var(--mono);color:var(--dim);margin-top:14px}

/* how */
.stops{max-width:1000px;margin:auto;padding:0;list-style:none;position:relative}
.stops::before{content:"";position:absolute;left:21px;top:16px;bottom:16px;width:12px;background:var(--red);border-radius:6px}
.stops li{display:flex;gap:26px;align-items:flex-start;padding:16px 0;position:relative}
.stop-dot{flex:none;width:54px;height:54px;border-radius:50%;background:#fff;border:8px solid var(--night);box-shadow:0 0 0 5px var(--red);position:relative;z-index:1;margin-left:0}
.stops b{font:900 24px var(--sans);display:block;margin-top:6px}
.stops p{margin:4px 0 0;color:var(--mute)}

/* cards */
.cards{max-width:1240px;margin:auto;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:var(--panel);border-radius:18px;padding:22px 22px 24px;border-top:10px solid var(--c);transition:transform .2s}
.card:hover{transform:translateY(-4px)}
.card h3{font:900 22px var(--sans);margin:4px 0 6px}
.card p{margin:0;color:var(--mute);font-size:16px}

/* guide */
.guide{background:#f4f1e8;color:#14182a}
.guide .kicker{color:#5b6070}
.guide .sec-head h2{color:#0b1324}
.guide-grid{max-width:1240px;margin:auto;display:grid;grid-template-columns:1.55fr 1fr;gap:34px;align-items:start}
.prose h3{font:900 24px var(--sans);margin:1.4em 0 .3em;padding-left:14px;border-left:8px solid var(--green)}
.prose h3:first-child{margin-top:0}
.prose p{margin:0 0 .9em;color:#2a3047}
.guide code{background:#e6e1d3;color:#0b1324}
.glossary{background:#fff;border-radius:18px;padding:24px;border:3px solid #0b1324;position:sticky;top:96px}
.glossary h3{font:900 20px var(--sans);margin:0 0 12px}
.glossary h3:not(:first-child){margin-top:24px}
.glossary dl{margin:0;display:grid;gap:10px}
.glossary dt{font:800 16px var(--sans);display:flex;align-items:center;gap:10px}
.glossary dd{margin:0 0 0 46px;color:#4a5068;font-size:15px}
.k-station{width:36px;height:16px;border-radius:8px;background:#fff;border:4px solid #111}
.k-line{width:36px;height:8px;border-radius:4px;background:var(--red)}
.k-thick{width:36px;height:16px;border-radius:8px;background:var(--blue)}
.k-badge{background:#111;color:#fff;font:700 11px var(--mono);border-radius:5px;padding:2px 5px;width:36px;text-align:center}
.glossary table{width:100%;border-collapse:collapse;font-size:14px}
.glossary th{text-align:left;font:700 11px var(--mono);letter-spacing:.14em;color:#5b6070;padding:6px 4px;border-bottom:2px solid #0b1324}
.glossary td{padding:8px 4px;border-bottom:1px solid #e3ddcc;vertical-align:top}

/* faq */
.faq-list{max-width:900px;margin:auto;display:flex;flex-direction:column;gap:10px}
.faq details{background:var(--panel);border-radius:14px;border-left:8px solid var(--purple)}
.faq summary{cursor:pointer;list-style:none;padding:18px 56px 18px 20px;font:800 19px var(--sans);position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:22px;top:50%;width:14px;height:14px;border-right:4px solid var(--sign);border-bottom:4px solid var(--sign);transform:translateY(-70%) rotate(45deg);transition:transform .2s}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq details p{margin:0;padding:0 20px 20px;color:var(--mute)}

/* honest */
.honest{padding-top:10px}
.honest-box{max-width:1000px;margin:auto;background:var(--sign);color:#0b1324;border-radius:18px;padding:28px 32px;box-shadow:12px 12px 0 #000}
.honest-box h2{font:900 30px var(--sans);margin:0 0 10px;display:flex;align-items:center;gap:12px}
.warn{width:36px;height:36px;border-radius:50%;background:#0b1324;color:var(--sign);display:grid;place-items:center;font:900 22px var(--sans)}
.honest-box ul{margin:0;padding-left:20px}
.honest-box li{margin:.45em 0}

.foot{padding:0 20px 34px}
.foot-line{height:12px;max-width:1240px;margin:0 auto 26px;background:linear-gradient(90deg,var(--sign) 0 20%,var(--red) 20% 40%,var(--blue) 40% 60%,var(--green) 60% 80%,var(--purple) 80%);border-radius:6px}
.foot-in{max-width:1240px;margin:auto;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;font:13px var(--mono);color:var(--dim)}
.foot-in p{margin:0}
.foot-in>a:last-child{color:var(--mute)}

@media (max-width:1060px){
  .hero-in,.guide-grid{grid-template-columns:1fr}
  .ticket{grid-template-columns:1fr auto 1fr}
  .t-field.amt{grid-column:1/-1;order:-1}
  .t-field.slip{grid-column:1/2}
  .go{grid-column:2/4;justify-self:end}
  .dep{grid-template-columns:repeat(3,1fr)}
  .dep>div{border-bottom:1px solid #16213a}
  .cards{grid-template-columns:1fr 1fr}
  .glossary{position:static}
  .sweep-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  .nav nav{display:none}
  section{padding:64px 16px}
  .hero{padding:44px 16px 0}
  .ticket{grid-template-columns:1fr;padding:16px}
  .ticket::before,.ticket::after{display:none}
  .swapdir{justify-self:center;margin:0}
  .t-field.slip,.go{grid-column:auto}
  .go{justify-self:stretch;justify-content:center}
  .dep{grid-template-columns:1fr 1fr}
  .compare,.cards{grid-template-columns:1fr}
  .board-row{grid-template-columns:86px 1fr}
  .b-v{font-size:15px}
  .stops::before{left:17px}
  .stop-dot{width:46px;height:46px}
  .stops li{gap:16px}
  .hero-map{height:150px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .train,#routeMap .pulse{display:none}
}
@media (max-width:720px){
  .dep b{font-size:17px}
  .mapwrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
  #routeMap{min-width:680px}
  .mapwrap .cap span:last-child::after{content:" · scroll →"}
}